Lifeboat Foundation

But what does that actually mean? Professor Brian Cox explains all.

Vitamin C has long been known as an essential nutrient for skin health and immune function, but it turns out its antioxidant activity plays a large role in those properties (among others).*.

At least four people have died across the region.

Ion channels are crucial for neural communication; they control the flow and gradient of charged particles, creating electrical signals. Recent work report | Neuroscience.

In this study, the researchers assessed how dense ion channels were packed in the membranes of neuronal cells from ten species of mammals, including mice, rats, rabbits, ferrets, macaques, marmosets, macaques, humans, and one of the smallest known mammals, an animal called the Etruscan shrew. The team focused on a type of excitatory neuron typically found in the cortex of the brain, and three ion channels that are in the membranes of those cells; two are voltage-gated ion channels that control the movement of potassium, another is called the HCN channel and both potassium and sodium ions can flow through it.

Continue reading “Human Neurons Found to be Surprisingly Different From Other Mammals” »

Theories on how to build a space elevator have been around for decades. Scientists say not only would such technology change humanity, but that we could have built one by now.

#Space #Moonshot #BloombergQuicktake.
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Continue reading “Are Space Elevators Growing Closer to Reality?” »

[Billy] has a special interest in passive hydroponics (also known as the Kratky method), which is a way of growing plants in nutrient-rich water that does not circulate. As the plant grows and liquid level drops, only the tips of the roots remain submerged while more and more of the root surface is exposed to oxygen in a harmonious balance. However, “thirsty” plant types (tomatoes, for example) throw off this balance, and the system needs to be modified. To address this, [Billy] designed and printed a passive float valve system that takes care of topping up the reservoir only when needed, without using pumps or any other electrical equipment.

Commercial or industrial float valves are too big to use in his small tanks, which led [Billy] to test dozens of DIY designs. He used everything from plastic water bottles to pipe ends, but nothing quite measured up. With 3D printing, [Billy] was able to create a sealed, lightweight float that exactly matched the housing and tube locations.

Continue reading “DIY Float Valve For Passive Hydroponics Leverages 3D Printing” »